Improvement in double-acting force-pumps



UNITED STATES PATENT OFFICE,

oHAELEs E. NEWMAN, 0F FORT WoETE, TExAs.

IM PjRovi-:M iNTA 'INA DOUBLE-ACTING FoRcE-PuM Ps.V

Specification forming part of `Letters Patent No. 219,754, dated September 16, 1879; lapplication filed July 22, 1879. i

To all whomlvz't may concern;

Be it known'thatl, CHAELEs ELIJAH NEW- MAN, of Fort Worth, in the county of Tarrant tainstomale and :use the same, reference be- -ing had Ito the accompanying drawings, and.Y

to yt-he letters 'of reference marked thereon,l

`tical sectional view of my improved pump, the

My improved pump is ofh the kind in -which a single cylinder-and Ahollow piston-rod operwhich form4 a partof this specification.

ate in connection with upper and lower cylinder-valves, and with avalved piston adapted to have a reciprocal motion independent'of and Aupon the hollow piston-rod, to discharge' the water from both sides of the piston with a 4double action and Lin a continuous streaml through said hollow piston-rod.

v The -piston proper is connected to the piston-rod in a manneryto allow of the free pivotaly adjustment of theagalved piston in its `reciprocal motion with its hollow carrying-rod,

and thereby render -certain this 4independent action of thevalved piston in forming a cut`l oif, to ganse thewater to be forced up through vthe piston-rod as the piston is operated. This pivotal adjustment ofthe piston is important in maintaining its connection with the pistonrod free from binding and liability to jam and stick, and to fail of its cut-off function. For this purpose the valved piston is connected by slotted circumferential extensions with ra recessed plunger of the piston-rod by horizontal.

diametric pivot-pins, thus connecting the two parts at circumferential points and by horizontal bearings, upon and over which the piston.has a free vertical and swinging 'adjustment.

The plunger isrecessed on its under side for two purposes-tovform a circumferential bearing-rim, tting within and making a close joint upon the upper recessed face of the pisis closed therewith. While in the open position of the piston the lateral pressure upon the 4plunger is equalized in the escape of the water from the upper part of` the cylinder through the annular. space between the rims of the piston and plunger, These are the important points which render the' pump effective in its operation, while withtvalves of beveled disks confined by guide-stemsiwithin beveled seats the durability of these parts is very greatly increased. 11.-

In the drawings, Figure 1 represents a verpiston being shown as rising.; Fig. 2, a similar section, the piston being shown as descending; Fig. 3, a detached perspective view of the piston and plunger; and Fig. 4, a View of the lower cylinder-head inverted, showing the valve and the skeleton-guide.

The pump-cylinder Ais` provided with induction-ports B B at its upper and lower ends for the admission of water,and with inwardly-opening valves, to be hereinafter more particularly described. l

The piston C is formed with-a cylindrical recess on its upper side, andwith an aperture, D, in its bottom, which isprovidedwith an upwardly-opening valve, similar in `nzonstruction to the valves of the induction-ports.

' A cylindrical plunger, E, recessed on its under side, is attached to a hollow piston-rod, F, passing through a suitable stuffing-box, G, at the upper end of the cylinder, and extending upward, where it terminates in a curved discharge. The said plunger fits into the recess in the piston, and the piston `is secured to the same by means of slotted `lugs I on said piston and `the pins or screws a, passing through said slots and secured tothe plunger.

The piston and plunger are capable of` a slight reciprocal motion with respect to each other, which is limited by the length of the slots in the lugs I, an annular passage for water being formed between the two when separated, which is closed when theyare brought together, for the purpose tobe `more fully hereinafter explained. p

The valves L, for opening and closing the respective ports of the pump, are formed with .conical or beveled bearingfaces,and their re-A spective seats are similarly beveled, the areas of the bearing-surfaces of the valves and their beveled or conical seats bearing such relation to each other, however, that the surfaces l, against which the pressure of the water is exerted when the valves are seated, will fall below or back of the edge of the seat, as clearly shown in Figs. 1 and 2 of the drawings, so that no pressure will be exerted upon the sides of the valve, but will be wholly confined to the surfaces l, whereby a joint is formed which will be rendered tighter as the depth of the well,or water in which the pump is submerged, is increased, and as the pressure of the column ot' water to be lifted is augmented. The said valves are provided with skeleton-guides, consisting of three or more projections, b, passing through their respective ports, and having attached to their outer ends skeleton-stops b', which hold them in place and limit the movements with respect to their seats.

The pump is provided with suitable means by which to attach it to the support R, which is let down and properly secured in the well, and the piston-rod is secured to one end of a lever, S, suitably pivoted above ground, by means of which the pump may be operated.

The ports at the upper end of the cylinder should be equal in combined area to the area of the port at the lower end of the cylinder, in order to supply the water to both ends of the cylinder uniformly; and for this reason it is evident that a single port at the upper end of the cylinder, equal in area to that at the lower end ofthe cylinder, may be employed, or that f more than two ports may be employed at said upper end of the cylinder, so long as their conibined areas equal the area of the lower port. Moreover, it is evident that the lower end, instead of being provided with a port at its bottom, may be provided with one or more side ports, similar to the upper ports.

The operation of my improved pump will be readily understood in connection with the above description, and is as follows: The pistou being at its full dowustroke, upon elevating it the valve at the bottom will be raised, andthe water will ilow in below the piston, following it until it has reached its full upstroke. Upon depressing the piston the upper valves will be opened, allowing the water in a similar manner to enter the cylinder above the piston. At the saine time the lower valve will be closed, and the water, finding no escape through the lower port, will force open the valve in the piston and pass upward through the opening in the same. Now, as the downstroke of the plunger forces it into the recess in the piston, the passage of water between said plunger and piston is cut off, and the water from the lower chamber is compelled to pass up through the hollow piston-rod and out of the dischargespout. Upon again elevating the piston water is taken in the cylinder below the piston, as before, and the water, previously taken in above the piston, pressing against the upper, valves, closes them, affording no outlet through the upper ports. The plunger, in its upward movement, separates from the piston, leaving an annular space between the two leading into the recess in the plunger. Through this space the water in the upper part of the cylinder finds an outlet, and is forced up through the hollow piston-rod and discharged.

The pump is secured to its support in a manner to allow it to have a slight oscillation with the movement of the piston-rod.

I claim- 1. In a submerged double-actingforce-pump, the valved piston C and the plunger E of the hollow piston-rod, attached to-each other by pivotal and slotted bearing-connections,whereby to allow them to open and close with each other with a free pivotal adjustment of said piston in effecting the cut-oit' of the water from one side of the piston to the other, substantially as herein set forth.

2, In a submerged double-actin g force-pum p, the valved piston C, having the vertical slotted extensions I, and the plunger E of the hollow piston-rod, having the diameter-bearings a a for the said slotted extensions, whereby to unite the parts and suspend the said valved piston, substantially as and for the purpose herein set forth.

3. In a submerged double-actin g force-pump, the recessed piston C and the recessed plunger E, having the circumferential bearing-rim, united to each other, substantially as herein set forth, in combination with a ilat beveled valve, L, operating in connection with the piston and the hollow piston-rod,.substantially as herein set forth.

4. A submerged double-acting pump, consisting ofthe cylinder having induction valved ports at each end, the valved recessed piston O L, the hollow piston-rod having the recessed plunger E, and the circumferential slotted pivotal connections I a of the valve and plunger, all constructed and adapted for operation substantially as herein `set forth.

In testimony that I claim .the foregoing I have hereto aiixed my signaturein the presence of two witnesses.

CHARLES ELIJAH NEWMAN.

Witnesses:

M. H. JoHNsoN, W. H. MOBRIDE. 

